Investment Objective/Strategy -The First Trust NASDAQ® Clean Edge® Green Energy Index Fund is an exchange-traded index fund. The objective of the Fund is to seek investment results that correspond generally to the price and yield (before the Fund's fees and expenses) of an equity index called the NASDAQ® Clean Edge® Green Energy IndexSM.

There can be no assurance that the Fund's investment objectives will be achieved.

The index is a modified market capitalization weighted index designed to track the performance of clean energy companies that are publicly traded in the United
States and includes companies engaged in manufacturing, development, distribution and installation of emerging clean-energy technologies including, but not
limited to, solar photovoltaics, biofuels and advanced batteries.

The index is reconstituted twice a year in March and September and rebalanced quarterly.

Fund Overview

Ticker

QCLN

Fund Type

Alternative Energy

Investment Advisor

First Trust Advisors L.P.

Investor Servicing Agent

Bank of New York Mellon

CUSIP

33733E500

ISIN

US33733E5006

Intraday NAV

QCLNIV

Fiscal Year-End

12/31

Exchange

Nasdaq

Inception

2/8/2007

Inception Price

$20.00

Inception NAV

$20.00

Rebalance Frequency

Quarterly

Gross Expense Ratio*

0.66%

Net Expense Ratio*

0.60%

* As of 5/1/2018

Expenses are capped contractually at 0.60% per year, at least until April 30, 2019.

Current Fund Data (as of 1/18/2019)

Closing NAV1

$18.78

Closing Share Price2

$18.76

Bid/Ask Midpoint

$18.79

Bid/Ask Premium

0.03%

Total Net Assets

$88,283,081

Outstanding Shares

4,700,002

Daily Volume

10,374

Average 30-Day Daily Volume

17,776

Closing Share Price 52-Week High/Low

$21.52 / $16.31

Closing NAV 52-Week High/Low

$21.53 / $16.41

Number of Holdings

39

Fund Characteristics (as of 12/31/2018)8

Maximum Market Cap.

$57,153

Median Market Cap.

$1,836

Minimum Market Cap.

$95

Price/Earnings

16.78

Price/Book

2.10

Price/Cash Flow

10.96

Price/Sales

1.79

Top Holdings (as of 1/18/2019)

Holding

Percent

ON Semiconductor Corporation

8.03%

Tesla, Inc.

7.57%

Albemarle Corporation

6.98%

Hexcel Corporation

5.55%

Cree, Inc.

4.81%

Universal Display Corporation

4.78%

First Solar, Inc.

4.73%

Brookfield Renewable Partners LP

4.37%

Littelfuse, Inc.

4.30%

Acuity Brands, Inc.

4.07%

Holdings are subject to change.

NAV History (Since Inception)

Past performance is not indicative of future results.

Distribution Information

Dividend per Share Amt (as of 1/21/2019)3

$0.0831

30-Day SEC Yield (as of 12/31/2018)4

0.90%

Unsubsidized 30-Day SEC Yield (as of 12/31/2018)5

0.82%

12-Month Distribution Rate (as of 12/31/2018)6

1.03%

Index Yield (as of 12/31/2018)7

1.58%

Bid/Ask Midpoint vs. NAV (as of 12/31/2018)

Number of Days Bid/Ask Midpoint Above NAV

Quarter Ended

0-49Basis Points

50-99Basis Points

100-199Basis Points

>=200Basis Points

12/31/2018

32

2

1

0

9/30/2018

39

0

0

0

6/30/2018

36

0

0

0

3/31/2018

44

0

0

0

Number of Days Bid/Ask Midpoint Below NAV

Quarter Ended

0-49Basis Points

50-99Basis Points

100-199Basis Points

>=200Basis Points

12/31/2018

26

2

0

0

9/30/2018

24

0

0

0

6/30/2018

28

0

0

0

3/31/2018

17

0

0

0

The price used to calculate market return is determined by using the midpoint between the highest bid and the lowest offer on the stock exchange, on which shares of the Fund are listed for trading, as of the time that the Fund's NAV is calculated.

Top Sector Exposure (as of 1/18/2019)

Alternative Electricity

19.27%

Electrical Components & Equipment

17.89%

Semiconductors

16.99%

Renewable Energy Equipment

11.85%

Specialty Chemicals

9.15%

Automobiles

7.57%

Aerospace

5.55%

Building Materials & Fixtures

4.07%

Electronic Equipment

2.88%

Alternative Fuels

1.99%

Month End Performance (as of 12/31/2018)

3 Mos

YTD

1 Year

3 Year

5 Year

10 Year

SinceFundInception9

Fund Performance *

Net Asset Value (NAV)

-9.90%

-12.22%

-12.22%

4.21%

0.53%

5.28%

-0.56%

After Tax Held

-10.08%

-12.56%

-12.56%

3.81%

0.17%

5.02%

-0.76%

After Tax Sold

-5.86%

-7.22%

-7.22%

3.05%

0.24%

4.09%

-0.52%

Market Price

-10.15%

-12.59%

-12.59%

4.13%

0.48%

5.27%

-0.58%

Index Performance **

NASDAQ Clean Edge® Green Energy Index

-9.92%

-12.11%

-12.11%

4.15%

0.49%

5.35%

-0.38%

Russell 2000® Index

-20.20%

-11.01%

-11.01%

7.36%

4.41%

11.97%

5.76%

Quarter End Performance (as of 12/31/2018)

3 Mos

YTD

1 Year

3 Year

5 Year

10 Year

SinceFundInception9

Fund Performance *

Net Asset Value (NAV)

-9.90%

-12.22%

-12.22%

4.21%

0.53%

5.28%

-0.56%

After Tax Held

-10.08%

-12.56%

-12.56%

3.81%

0.17%

5.02%

-0.76%

After Tax Sold

-5.86%

-7.22%

-7.22%

3.05%

0.24%

4.09%

-0.52%

Market Price

-10.15%

-12.59%

-12.59%

4.13%

0.48%

5.27%

-0.58%

Index Performance **

NASDAQ Clean Edge® Green Energy Index

-9.92%

-12.11%

-12.11%

4.15%

0.49%

5.35%

-0.38%

Russell 2000® Index

-20.20%

-11.01%

-11.01%

7.36%

4.41%

11.97%

5.76%

3-Year Statistics (as of 12/31/2018)

Standard Deviation

Alpha

Beta

Sharpe Ratio

Correlation

QCLN

14.00%

-0.89

0.67

0.29

0.77

Russell 2000® Index

16.01%

---

1.00

0.46

1.00

Standard Deviation is a measure of price variability (risk). Alpha is an indication of how much an investment outperforms or underperforms
on a risk-adjusted basis relative to its benchmark.Beta is a measure of price variability relative to the market. Sharpe Ratio is a measure
of excess reward per unit of volatility. Correlation is a measure of the similarity of performance.

*Performance data quoted represents past performance. Past performance is not a guarantee of future
results and current performance may be higher or lower than performance quoted. Investment returns
and principal value will fluctuate and shares when sold or redeemed, may be worth more or less than
their original cost.

After Tax Held returns represent return after taxes on distributions. Assumes shares have not been sold.
After Tax Sold returns represent the return after taxes on distributions and the sale of fund shares. Returns
do not represent the returns you would receive if you traded shares at other times. Market Price returns are
based on the midpoint of the bid/ask spread on the stock exchange on which shares of the fund are listed for
trading as of the time that the fund’s NAV is calculated. Returns are average annualized total returns, except
those for periods of less than one year, which are cumulative. The fund's performance reflects fee waivers
and expense reimbursements, absent which performance would have been lower.

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and
do not reflect the impact of state and local taxes. Actual after-tax returns depend on the investor’s tax
situation and may differ from those shown. The after-tax returns shown are not relevant to investors who hold
their fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.

**Performance information for the NASDAQ Clean Edge® Green Energy Index is for illustrative purposes only and does not represent actual fund performance.

Indexes do not charge management fees or brokerage expenses, and no such fees or expenses were deducted from the performance shown. Indexes are unmanaged and an investor cannot invest directly in an index.

Russell 2000® Index - The Index is comprised of the smallest 2000 companies in the Russell 3000 Index.

Fund shares are purchased and sold on an exchange at their share price rather than net asset value (NAV), which may cause the shares to trade at a price greater than NAV (premium) or less than NAV (discount).

3

Most recent distribution paid or declared to today's date. Subject to change in the future. There is no guarantee that the fund will declare dividends.

4

The 30-day SEC yield is calculated by dividing the net investment income per share earned during the most recent 30-day period by the maximum offering price per share on the last day of the period and includes the effects of fee waivers and expense reimbursements, if applicable.

5

The unsubsidized 30-day SEC yield is calculated the same as the 30-day SEC yield, however it excludes contractual fee waivers and expense reimbursements.

6

12-Month Distribution Rate is calculated by dividing the sum of the fund's trailing 12-month ordinary distributions paid or declared by the NAV price. Distribution rates may vary.

7

Index yield represents the weighted average trailing 12-month dividend of the constituents of the NASDAQ Clean Edge® Green Energy Index.

8

All market capitalization numbers are in USD$ Millions.

9

Inception Date is 2/8/2007

You should consider the fund's investment objectives, risks, and charges and expenses carefully before investing. You can download a prospectus or summary prospectus, or contact First Trust Portfolios L.P. at 1-800-621-1675 to request a prospectus or summary prospectus which contains this and other information about the fund. The prospectus or summary prospectus should be read carefully before investing.

ETF Characteristics

The fund lists and principally trades its shares on The Nasdaq Stock Market LLC.

The fund's return may not match the return of the NASDAQ Clean Edge® Green Energy Index. Securities held by the fund will generally not be bought or sold in response to market fluctuations.

Investors buying or selling fund shares on the secondary market may incur customary brokerage commissions.
Market prices may differ to some degree from the net asset value of the shares. Investors who sell fund shares may receive less than the share's net
asset value. Shares may be sold throughout the day on the exchange through any brokerage account. However, unlike mutual funds, shares may only be
redeemed directly from the fund by authorized participants, in very large creation/redemption units. If the fund's authorized participants are unable
to proceed with creation/redemption orders and no other authorized participant is able to step forward to create or redeem, fund shares may trade at
a discount to the fund's net asset value and possibly face delisting.

Risk Considerations

The fund's shares will change in value, and you could lose money by investing in the fund. One of the principal risks of investing in the fund is market risk. Market risk is the risk that a particular stock owned by the fund, fund shares or stocks in general may fall in value. There can be no assurance that the fund's investment objective will be achieved.

The fund may invest in securities issued by companies concentrated in a particular industry. The fund may invest in small capitalization and mid capitalization companies. Such companies may experience greater price volatility than larger, more established companies.

Renewable and alternative energy companies can be significantly affected by obsolescence of existing technology, short product cycles, legislation resulting in more strict government regulations and enforcement policies, fluctuations in energy prices and supply and demand of alternative energy fuels, energy conservation, the success of exploration projects, the supply of and demand for oil and gas, world events and economic conditions. Shares of clean energy companies have been significantly more volatile than shares of companies operating in other more established industries. This industry is relatively nascent and under-researched in comparison to more established and mature sectors.

The fund is classified as "non-diversified" and may invest a relatively high percentage of its assets in a limited number of issuers. As a result, the fund may be more susceptible to a single adverse economic or regulatory occurrence affecting one or more of these issuers, experience increased volatility and be highly concentrated in certain issuers.

First Trust Advisors L.P. is the adviser to the fund. First Trust Advisors L.P. is an affiliate of First Trust Portfolios L.P., the fund's distributor.

Nasdaq® and Clean Edge® are the registered trademarks (the "Marks") of The
Nasdaq, Inc. ("Nasdaq") and Clean Edge, Inc. ("Clean Edge") respectively. Nasdaq and
Clean Edge® are, collectively with their affiliates, the "Corporations". The Marks are licensed for use by First Trust
Advisors L.P. The fund has not been passed on by the Corporations as to its legality or suitability. The fund is not issued, endorsed,
sold or promoted by the Corporations. The fund should not be construed in any way as investment advice by the Corporations.
THE CORPORATIONS MAKE NO WARRANTIES AND BEAR NO LIABILITY WITH RESPECT TO THE FUND.

Not FDIC Insured • Not Bank Guaranteed • May Lose Value

The information presented is not intended to constitute an investment recommendation for, or advice to, any specific person. By providing this information, First Trust is not undertaking to give advice in any fiduciary capacity within the meaning of ERISA and the Internal Revenue Code. First Trust has no knowledge of and has not been provided any information regarding any investor. Financial advisors must determine whether particular investments are appropriate for their clients. First Trust believes the financial advisor is a fiduciary, is capable of evaluating investment risks independently and is responsible for exercising independent judgment with respect to its retirement plan clients.

First Trust Portfolios L.P. Member SIPC and FINRA.
First Trust Advisors L.P.